Okay, like everyone else here I was pretty frustrated when this didn't work with the new update. But after a frenzy of clicking I was able to get it working.

Here's the trick:
1) To open an ebook you have to first look for the open book in your browser toolbar.
2) Click it JUST ONCE.
3) Now click the page - NOT in the middle of the image, but in the middle of the page. Click just once, if you do it twice the toolbars, which are located on the top and bottom of the page, will go away.
4) Click the button that stands for the table of contents. It looks like a tablet, or a page with writing on it.
5) Now click the first chapter.
6) Enjoy!

If you're like me and would rather read it on your Kindle- you still can. Just click the floppy disc image, download, and use your favorite converter (I like online-convert.com).

Good luck!